Adjustable dummbells 3 in 1 set. This adjustable dumbbell set upgrades to meet the needs of the upper and lower body workouts. Chrome galvanized . Set has two types of extension rods - straight and curved .Multiple uses of this dumbbell set are ideal to exercise arms, chest, back, core, and legs. You can adjust this dumbbell from hand-held 2.75 lb to barbell 110 lb. There are four different sizes of dumbbell pieces for you to choose from.